Thank you. This worked, and was very easy to follow.
Thanks! Customer service reps don't even know the answer.
Thank you so much for the workaround. It works!
100% solution. Fantastic advice. Thank you!
Thank you very much. Your advice was really helpful!
Other:

This is NOT abusive. I pressed this button by accident.It is spam / self promotion.It is offensive or harmful.It does not contain enough information.It contains or requests illegal information.It does not make sense.

"The router it should reset all existing settings the it will need the default..."

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If you set a new password to the router and forgot it the default password will no longer work. all you need to do it to hard reset the router poke the small hole at the back sometimes at the side of the router it should reset all existing settings the it will need the default USER "admin" and the default PASSWORD is "password" without the quotations.

"The feature that i mentioned is the wireless repeating function where you can connect..."

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In connecting two routers on the same network, that would result to two features and you can use this two features on your Arris gateway and PFSense router depending on each devices support.

One of the feature that I mentioned is the Wireless Repeating Function where you can connect Arris gateway and PFSense router wirelessly without a wired connection. On this connection, you need to check first if both devices have wireless repeating capability. If one of the two does not support it, or both devices do not support this connection, it is not possible to use Wireless Repeating.

The other option is the Access Point. On this setup, you need to hardwired one router to the other router. If you wanted to leave the Arris Gateway as your main router, then the PFSense router now will serve as an Access Point.

This time, check if the computer you hardwired to the second router is getting a valid IP Address and Default Gateway. Ping it by running the command prompt to make sure that you are getting response or able to communicate with each other. If everything went well, you are good to go now to access the PFSense WebConfigurator using its Default Gateway.

"I plugged the linksys router into the back of the arris..."

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The Arris TG862G/CT gateway modem (voice, internet, wifi) serves as a modem and router in one. We had the same problem connecting our Samsung Galaxy Tab 2 7" tablets to the Arris TG862G/CT wifi. It functioned fine in terms of telephone service and provided internet via wifi to our laptops without any issues. It simply didn`t work with our Samsung tablets (incompatible?). Resolved the issue by having Comcast activate bridge mode in the Arris modem. This deactivated the Arris router component and allowed us to use our own router (a Linksys model which had previously worked for the tablets). After bridge mode was initiated remotely by Comcast, I plugged the Linksys router into the back of the Arris modem via Ethernet cable and turned the power off to both the Arris modem and Linksys router to reset. Powered back up and wifi from the Linksys router worked fine for all our devices, including the Samsung tablets. Remember that you will need to use your routers password (not Arris modem password) when setting up wifi on your devices. Good luck! :)

"Go to your time and date settings..."

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Do the following steps in order for you to have a wifi signal

1. Restart your device.
2. Go to your time and date settings. It should be correct in order for you access internet because Google is very particular with your Time and Date in order for them to avoid attacks to their domains.
3. Go to your Wireless and Networks. Remove the connections you have with your router.
4. Once removed add it again then connect to your home wireless network.
5. you should input a correct password.
6. Enjoy the connection.

If the problem still persist there might be a problem in your device. Since it is brand new, try to ask for RMA to the reseller or distributor by calling them or going to their store.

"Type in on the address bar the default gateway ip address..."

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Hi. Please follow the steps below:

1. Connect a computer directly to your modem.
2. Click on start and look for command prompt.
3. On the blinking curser, type ipconfig.
4. Check the default gateway ip address.
5. Open a web browser, type in on the address bar the default gateway ip address and hit on enter. 6. It will open the router page.

"And then the real long number called network key would be the password..."

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This information should be located on the bottom of the router for instance, something like "home-5664" will be the name of the network connection, and then the real long number called network key would be the password. It is real long with a mixture of letters and numbers, and it is case sensitive! Should you need anymore help please do not hesitate to ask!!

"To rename the wireless network name and password you need to go back to..."

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In order for you to rename the wireless network name and password you need to go back to the Modem Settings. Go to Wireless Network(Wireless Settings) Under wireless settings look for the field SSID(SSID is the wireless network name) as for the password it is the security just type in the password that you want and that would do it, you can save the settings and that is it you have a new wireless network name and password.

"To access its settings go to 192.168.100.1..."

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This may be correct for a Netgear, Belkin, and so on. IT IS NOT CORRECT FOR ARRIS TG862G/GT. To access its settings go to 192.168.100.1. (This is default for almost all Cable Modems). Now as to how to get it to bridge mode? I do not know that is why I came here! But thanks to the Dipshitz answer on how to access my Non Cable Router!

Eng.M.T. said: Please refer to the following:
http://www.arrisi.com/support/documentation/user_guides/_docs/TG862G-NA_User_Guide_Standard1-2.pdf
Goto page 26, there you can see that the IP for accessing setup is as per I told you : 192.168.0.1
Feel free to browse the whole manual
Regards.

"The 862 model has wireless router..."

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The 862 model has wireless router, so a separate router is not needed. If the network name (SSID) has not been set up then it is in default. The default network name is ARRIS- then four characters such as ARRIS-2FC5. The default password is on back of unit, I think its called pre-shared key 16 characters long.

I tried to link up my smart tv internet access point with my Arris TG862 router and the tv keeps asking me to enter the WPA passcode but i dont kno...

I tried to link up my smart tv internet access point with my Arris TG862 router and the tv keeps asking me to enter the WPA passcode but i dont know it. Theres one on the bottom of the modem but it wont work, what should i do?

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What is the default password for arris tg862g router?

Where on the xfinity arris model tg862g ct wireless router can you find the default wpa key?